DS12887 pcb substitute with battery

Jon Elson elson at pico-systems.com
Sun Jan 22 11:16:56 CST 2017

On 01/22/2017 10:07 AM, Ali wrote:
> Al,
> I thought the problem with switching these chips was that part of the ROM code was embedded in them? I.e. it isn't just an issue of battery? Am I wrong? If I am then why not use one of the replacement chips that are available?
These don't have a lot of memory on them.  many early PCs 
stored some config info there, but generally the BIOS can 
reconstruct it if it isn't there.  I suppose there is a 
possibility that random data in the CMOS memory could cause 
the BIOS to try to use unavailable features and hang.  I 
don't think anybody put actual executable code in there.


More information about the cctalk mailing list